[1]ZHANG Hui,QIU Kaiyu,WANG Yuyao,et al.Construction of Land Ecological Security Pattern in Main Agricultural Production Areas[J].Research of Soil and Water Conservation,2021,28(06):274-282.
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Construction of Land Ecological Security Pattern in Main Agricultural Production Areas
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 06
Page number:
274-282
Column:
Public date:
2021-10-10
- Title:
- Construction of Land Ecological Security Pattern in Main Agricultural Production Areas
- Keywords:
- main agricultural production areas; minimum cumulative resistance model; ecosystem service value; ecological sensitivity
- CLC:
- F301.2
- DOI:
- -
- Abstract:
- In order to ensure the safety of the ecosystem in the main grain production area in northeast China，especially the security of the agricultural ecosystem，Kedong County，the main agricultural production area in Heilongjiang Province，was used as the research area，and land ecological security pattern with the basic framework of ‘source-safety area-corridor-node' was constructed. Taking land use patches as the basic research unit，the ecological source of land was comprehensively identified based on the results of land ecological security evaluation; the ecological safety zone was determined by finding the minimum cumulative resistance value and the resistance mutation point of the grid area; ecological corridors and ecological nodes were identified by relying on the minimum cumulative resistance model and GIS spatial analysis. Finally，control measures for the ecological security pattern were provided. The results show that:(1)Kedong County's land ecosystem service value and land ecological sensitivity are generally low，among which the area with general value is the largest in the ecological service value evaluation，and the area with extreme value is the smallest; the area with the mild ecological sensitivity is the largest，and the area with the extreme sensitivity is the smallest; the high values of ecological security evaluation distributed near the northern and central part of the county;(2)the land ecological security pattern consists of 17 land ecological sources，3 different levels of ecological security zones，and 63 ecological corridors and 18 ecological nodes. Through research on the construction of land ecological security pattern in Kedong County，a land ecological security network with the framework of land ecological source—ecological security zone—ecological corridor—ecological node has been formed in the county，which guarantees the biodiversity stability and ecosystem security in the county to a certain extent.
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Last Update:
2021-10-10